3312 2 mm Series Dual TBU ? High-Speed
P500-G - and P850-G SMD Trimming Potentiometer Protectors
Reference Designs
A cost-effective protection solution combines the Bourns ? TBU ? protection device with a pair of MOVs or Bourns ? GDTs and a diode
bridge. The diagram below illustrates a common con?guration of these components. The graphs to the right demonstrate the
operational characteristics of the circuit.
For new SLIC applications,
V1
V2
we recommend that
MOVs
or
GDTs
Pxxx-G
-V REF
Common Con?guration Diagram
P500-G Con?guration (GR-1089 Intra-building and 5 kV Lightning)
TBU Device
Product
?
MOV
Qty.
1
2
Part Number
P500-Gxxx-WH
Source
Bourns, Inc.
Bourns, Inc.
Diode bridge
2
GSD2004S-V
MMBD2004S
Vishay
Diodes Inc.
3
2
1
500 ns/div.
Ch1 V1
Ch2 V2
Ch3 Current
P500-G Solution: 5000 V Lightning 2/10 μsec, 500 A
P850-G Con?guration (ITU-T K.20, K.21, K.20E, K.21E, K.45)
Product
TBU ? Device
MOV
Qty.
1
2
Part Number
P850-G120-WH
Source
Bourns, Inc.
Bourns, Inc.
Diode bridge
2
GSD2004S-V
MMBD2004S
Vishay
Diodes Inc.
3
2
1
Asia-Paci?c: Tel: +886-2 2562-4117 ? Fax: +886-2 2562-4116
EMEA: Tel: +36 88 520 390 ? Fax: +36 88 520 211
500 ns/div.
The Americas: Tel: +1-951 781-5500 ? Fax: +1-951 781-5700
Ch1 V1
Ch2 V2
Ch3 Current
www.bourns.com
P850-G Solution: 4000 V Lightning 10/700 μsec, 100 A
REV. 10/13
“TBU” is a registered trademark of Bourns, Inc. in the United States and other countries.
Speci?cations are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their speci?c applications.
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